Home / 6,415.66-9,622.85-3,131.02

Finding the Fourth Proportional to 6,415.66, 9,622.85 and 3,131.02

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Solution

The fourth proportional to 6,415.66, 9,622.85 and 3,131.02 is: 4,696.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.66 : 9,622.85 = 3,131.02 : x
  2. Step 2: Convert to fraction form
    6,415.66/9,622.85 = 3,131.02/x
  3. Step 3: Cross multiply
    6,415.66x = 9,622.85 × 3,131.02
  4. Step 4: Simplify right side
    6,415.66x = 30,129,335.81
  5. Step 5: Solve for x
    x = 30,129,335.81/6,415.66
  6. Step 6: Final answer
    x = 4,696.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.